Tube-making machine.



No. 779,105, PATENTBD JAN. 8, 1905., J. A. STOCK,

TUBE MAKING MACHINE.

APPLICATION FILED 00127. 1902.

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wwmomeg No. 779,105. PATEN'IED JAN. 3, 1905.

J. A. STOCK.

TUBE MAKING MACHINE.

APPLIUATIOH FILED OCT. 27. 1902.

3 SHEETS-SHEET 2.

Wiihameav- PATENTED JAN. 3, 1905.

J. A. STOCK.

TUBE MAKING MACHINE.

APPLICATION FILED 001227. 1902.

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Nrrsn STATES Patented January 3, 1905.

JULIUS A. STOCK, OF CHICAGO, ILLINOIS, 'ASSIGNOR TO IV. C. RITCHIE & (30., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

TUBE-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 779,105, dated January 3, 1905.

i Application filed October 27, 1902. Serial No. 128,942.

To all whom it may concern:

Be it known that 1, J ULIUS A. SrooK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Tube Making Machines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to paper-tube-making machines, and particularly to that class of tube-making machines designed to form tubes by spirally winding the paper or pasteboard that is to form the same. In machines of this character a stationary mandrel about which the pasteboard or paper is to be formed is employed, in association with which are provided belts which cooperate with the mandrel in the formation of the tube. The belts serve to properly compress the paper about the mandrel and to secure the superposed strips of paper, coiled to form the tubing, together, the belts acting as presser-belts. The belts are spirally wound and are endless.

It is the object of my present invention to provide improved means whereby the angles of the belts with reference to the mandrel may quickly and readily be changed to adapt the machine to the formation of different-sized tubes, &c., and whereby when a plurality of such presser-belts are employed their adjustment with reference to the mandrel may be independently effected. To this end I employ a plurality of adjustable or swinging bars, there being, preferably, but two of such bars, each of which supports a pair of pulleys for directing a belt in its travel. In order that the belts may be driven at a uniform rate of speed, they are operated by a common prime mover operating a shaft in driving connection with a pulley upon each bar. This drivingshaft is thus common to the driving-pulleys of the machine, being desirably associated therewith through the agency of miter-gears. As the bars are swung on their pivots the initially-driven pulleys upon the bars, together with the gears fixed with respect thereto, are moved toward and from the mandrel, they being accompanied in such movement by the driving-shaft that is operated by the prime mover. The axes of rotation of the prime ,mover and the driving-shaft are desirably fixed with respect to each other. The frame of the prime mover is movably mounted with respect to the main bed of the machine, so that the relative motion between the driving-shaft and the main bed of the machine may be accompanied by a corresponding movement of the motor. This result is most desirably accomplished by pivotally supporting the motor upon one of the swinging bars, so that as this bar is swung there will be relative rotation between the same and the frame of the motor, permitting of the required adjustment without change in the disposition of the motor with respect to the driving-shaft. In order to permit of the independent adjustment of the swinging bars, one of the miters upon the shaft has splined connection therewith, which miter is that which is located at the end of the shaft that is most remote from the motor.

I will explain my invention more fully by reference to the accompanying drawings, in which Figure 1 is a plan view of the machine constructed in accordance with the preferred embodiment of the invention. Fig. 2 is an end view of the machine shown in Fig. 1 in the direction of the arrow 2. Fig. 3 is a front view of the machine. Fig. 4 is a plan view of the structural parts of the machine. Fig. 5 is a sectional view on line 5 5 of Fig. 4. Fig. 6 is a sectional plan view illustrating some of the adjusting mechanism. Fig. 7 is a sectional View on line 7 7 of Fig. 6.

Like parts are indicated by similar characters of reference throughout the different figures.

The machine is desirably supplied with a base a, that will elevate its working parts a convenient distance above the floor-level. This base is provided with a mandrel I), thatis anchored at the left end of the machine and is free of support at the right end thereof, so that the tube as it is formed may readily issue. The paper-stock that is to constitute the tube is indicated at c c, the manner of its application to the mandrel being well understood by those skilled in the art.

Two forming-belts are indicated at (Z (Z, these belts being driven by pulleys e e and directed by pulleys ff. There are provided for the pairs of pulleys e and f swinging bars or supports g and h, which are rotatably mounted upon the bed of the machine, being preferably supported upon adjustable blocks 2', carried by the bed, upon which blocks pivots are directly disposed. The axes of rotation of the bars 9 and h are preferably in the same vertical plane with the axis of the mandrel. The angular relation of the belts with respect to the mandrel may readily be controlled by reason of the pivotal arrangement of the bars 9 and h. The adjusting mechanism thatI have shown is preferred. It includes a threaded shaft is, pivotally mounted upon the bed of the machine at one end, as at Z, and free at the other end, as indicated most clearly in Fig. 7 This threaded rod or shaft passes through blocks 072-, depending from slides a, in engagement with the bars 9 and h. The blocks m have pivotal engagement with the slides n, so that the angular relation between the rod 713 and the bars 9 and It may readily be changed. Adjusting hand-wheels 0 are in mechanical engagement with the blocks m and serve to adjust and secure the adjustment of the swinging bars. The pulleys e are operated by a common shaft p, which shaft is provided with gears (preferably miter-gears) q and r in engagement with gears s afixed with respect to the pulleyse The shaft 19 is immovable lon gitudinally with respect to its bearings p, but is preferably movable longitudinally with respect to its bearings 19 in order to permit relative movement between the bars 9 and it, though this latter feature is not essential. To enable the bearings p to be movable upon the shaft and at the same time provide a driving connection between the associated gear 7" and the shaft, a splined connection between the shaft and the said gear(indicated at 1*) is provided.

The motive means that is preferably employed for driving the shaft 1) is an electric motor, (indicated at 6.) As the motor itself runs with a high rate ofspeed and as it is desired to operate the shaft p at a much slower rate of speed, reduction gearing a is interposed between the motor and the drivingshaft. In order to maintain the desired physical relation between the motor and the driving-shaft p, the said motor is so mounted as to bodily accompany the shaft 12 in its movement, whereby the axis of the shaft and the axis of rotation of the motor are maintained substantially fixed with respect to each other. A very desirable way that I have been able to devise for enabling the motor thus to accompany the shaftp in its bodily movement is a construction employing a frame 41, upon which the bearings 10 are also located. The

bearings 12' and the frame 0), by reason of their fixed relation, bring about the fixed relation between the axis of the motor and that of the operating-shaft p. The frame 1) is carried by the swinging bar 9, the frame having swinging or pivotal-connection with this bar, such pivotal connection being indicated at 10. In this way the bar g may be moved within its range of adjustment without impairing the physical relation of the motor and the driving-shaft. The pulleys upon each swinging bar are preferably both positively driven, the transmission-shafts m, with associated gearing being interposed between the pulleys of each pair. I do not wish to be limited, however, to the mechanism shown for maintaining the relative positions of the motor and the shaft that I have herein illustrated and specifically described, nor do I wish to be limited to the precise details of construction thereof, as it is obvious that modifications may be made without departing from the spirit of the invention.

Having th us described my invention, Iclaim as new and desire to secure by Letters Patent 1. In atube-making machine, the combination with a mandrel thereof, of a plurality of swinging bars, each supporting a pair of pulleys, a belt associated with each pair of pulleys and cooperating with the mandrel in the production of the tubing, adriving-shaft com mon to the bars in driving engagement with the belt pulley upon each of the bars, supporting mechanism carried by one of said bars and movable with respect thereto, and a prime mover carried by said supporting mechanism and movable with respect to said bars and in driving engagement with said shaft, substan; tially as described.

2. In a tube-making machine, the combination with the mandrel thereof, of a plurality of swinging bars, each supporting a pair of pulleys, a belt associated with each pair of pulleys and cooperating with the mandrel in the production of the tubing, a driving-shaft common to said bars in driving engagement with abelt-pulley upon each of the bars, supporting mechanism pivotally mounted upon one of the bars, and a prime mover carried by said supporting mechanism and in driving engagement with the said shaft, substantially as described;

3. In a tube-making machine, the combination with the mandrel thereof, of a plurality of swinging bars, each supporting a pair of pulleys, a belt associated with each pair of pulleys and cooperating with the mandrelin the production of the tubing, a driving-shaft common to the bars in driving engagement with a belt-pulley upon each of the bars, the said driving-shaft being movable toward and from the mandrel as the swinging bars are adjusted, and a prime mover in driving engagement with the shaft and bodily movable therewith, substantially as described.

I. In a tube-making machine, the combination with the mandrel thereof, of a plurality of swinging bars, each supporting a pair of pulleys, a belt associated with each pair of pulleys, and cooperating with the mandrel in the production of the tubing, a driving-shaft common to the bars in driving engagement with a belt-pulley upon each of the bars, the said driving-shaft being movable toward and from the mandrel as the swinging bars are adjusted, a prime mover in driving engagement with the shaft and bodily movable therewith, and means whereby the axis of the shaft and the aXis of the motor are maintained substantially fixed with respect to each other, substantially as described.

5. In a tube-making machine, the combination with a pair of swinging bars, of a pair of pulleys upon each bar, a belt for each pair of pulleys, a mandrel acting in cooperation with the belt for the production of the tubing, a pivotally-anchored adjusting-rod Zr and means associated with the adjusting-rod for effecting relative adjustment between the bars, substantially as described.

In witness whereof I hereunto subscribe my name this 16th day of October, A. D. 1902.

JULIUS A. STOCK.

WVitnesses:

GEORGE L. CRAGG, AIMEE D. RUSSELL. 

